Beverage tumbler



FIG. 1 is a side elevational view of a beverage tumbler showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and

FIG. 4 is a side perspective view of a modification of my new design for a beverage tumbler. 

The ornamental design for a beverage tumbler, as shown and described. 